In 2000, the graduation rate of high school students was at 90.1 percent, up from 84.6 percent in 1990. Hawaiian schools are unique because they do teach their indigenous language to students at every grade level. There are 285 schools on the islands and the state spends $8,523 on each student annually. Unfortunately, students test scores are lower than the national average scores in the United States. In both 2003 and 2005, only 56 percent of eighth graders scored at basic or higher proficiency levels in mathematics. In 2003, 61 percent were at basic or above reading levels, and that score dropped 3 percent in 2005. The only scores where students had improved in recent years, was in reading, where scores improved by 2 percent.